Resource utilisation and power relations of community sport clubs in the aftermath of natural disasters

Community sport clubs (CSCs) provide a number of benefits to local communities, while confronting challenges with finances and staffing. In Queensland, Australia, these challenges have been compounded by recent natural disasters including widespread flooding that have significantly impacted operations of CSCs. The current research explores the provision of resources to CSCs in the aftermath of flooding events in 2010 and 2011, as well as the influence on power relations between CSCs and resource providers. To address this research purpose, qualitative data were collected across nine site visits (focus groups, interviews) to affected CSCs. The data revealed three resource providers: volunteers and members, partner organisations and government. In addition, the results indicate that relations between CSCs and members and volunteers, partner organisations and government were impacted in different ways. Examples of resource providers wielding power over CSCs due to the provision of resources emerged, along with some evidence of mutual power and dependence and CSCs exerting power over resource providers. The results provide implications for CSC managers to be more proactive in relation to resourcing through developing strategies for network building and improved communication within networks.     

忻州市旅游业对经济增长拉动效应的实证研究——基于旅游业依存度、贡献率和拉动率三个指标

通过构建旅游业依存度、贡献率和拉动率三个指标,从时间和空间两个维度,本文探讨了忻州市旅游业对经济增长的拉动效应。研究结果表明,忻州市旅游业依存度、旅游业贡献率和旅游业拉动率总体不断提高,旅游业对经济增长的拉动效应逐渐增大;在山西省11个地市中,忻州市旅游业拉动效应十分突出,但近年略有下降;在市域内部,各县旅游业对经济增长拉动效应的空间非均衡现象较突出,且东强西弱的空间格局与旅游资源在等级上东高西低、景区在空间上"东热、中温、西冷"现状具有很强的共轭性。     

我国城市专利产出的空间俱乐部收敛特征研究

运用ESDA方法对1997-2009年我国341个城市专利产出的时空演变特征进行分析;在此基础上构建空间计量模型,对我国城市专利产出的空间俱乐部收敛特征进行检验,并探讨其形成机制。研究结果表明:我国城市专利产出的空间自相关特征十分显著,且空间依赖程度在考察期内持续增强,由此带来城市专利产出空间差异在全国层面趋于发散。然而,在依据空间依赖模式进行分组的区域内部却表现出相异的时空演变特征。在H-H和L-L两个"空间俱乐部"内部,城市专利产出均呈现趋同迹象,但H-H组趋同特征不具显著性,同时组间专利产出差距不断扩大。研究在一定程度上揭示了空间异质性、局域地理溢出对专利产出整体发散和多稳态趋同的贡献和推动作用,并在此分析的基础上提出了相应的对策建议。     

碳市场建设对资源型城市资源依赖度的影响研究——基于异期DID模型

本文以降低资源依赖度作为切入点,以中国资源型城市为样本,鉴于不同碳交易试点地区开展试点工作的时间不一致,采用异期双重差分法（DID）考察碳交易市场试点对资源型城市资源依赖度的影响。实证结果发现：碳交易能够较为显著地降低资源型城市对传统资源的依赖程度,但此种影响具有一定滞后性,且平行趋势检验和安慰剂检验结果均能够支持这一实证结果。本研究结论对于增强中国碳交易市场发展信心、促进区域经济绿色低碳转型有一定的积极作用。     

Assessing the Sensitivity of Weighted Least Squares Model Fit Indexes to Local Dependence in Item Response Theory Models

Given the relationships of item response theory (IRT) models to confirmatory factor analysis (CFA) models, IRT model misspecifications might be detectable through model fit indexes commonly used in categorical CFA. The purpose of this study is to investigate the sensitivity of weighted least squares with adjusted means and variance (WLSMV)-based root mean square error of approximation, comparative fit index, and Tucker–Lewis Index model fit indexes to IRT models that are misspecified due to local dependence (LD). It was found that WLSMV-based fit indexes have some functional relationships to parameter estimate bias in 2-parameter logistic models caused by violations of LD. Continued exploration into these functional relationships and development of LD-detection methods based on such relationships could hold much promise for providing IRT practitioners with global information on violations of local independence.     

产业集群中企业家社会网络演化

首先研究企业家经历中的路径依赖和异化特征对其社会网络差异性演化的影响;后引用“撒网”模型,认为经历和环境双因素共同作用,导致网络呈现长期一致性和短期差异性相结合的演化规律;随后,又从网络开放性和多样性两个维度,归纳企业家社会网络演化的两种路径,分别对应内生型和外生型两种演进类型的产业集群。     

Dependency structure language model for topic detection and tracking

In this paper, we propose a new language model, namely, a dependency structure language model, for topic detection and tracking (TDT) to compensate for weakness of unigram and bigram language models. The dependency structure language model is based on the Chow expansion theory and the dependency parse tree generated by a linguistic parser. So, long-distance dependencies can be naturally captured by the dependency structure language model. We carried out extensive experiments to verify the proposed model on topic tracking and link detection in TDT. In both cases, the dependency structure language models perform better than strong baseline approaches.     

Field dependence/independence cognitive style and problem posing: an investigation with sixth grade students

Field dependence/independence cognitive style was found to relate to general academic achievement and specific areas of mathematics; in the majority of studies, field-independent students were found to be superior to field-dependent students. The present study investigated the relationship between field dependence/independence cognitive style and problem-posing ability among sixth grade students. The 94 students’ sample was clustered into three groups, according to the cognitive-style field dependence/independence (field dependents, field mixed and field independents). The results suggest that field-independent participants outperformed field-mixed and field-dependent ones in both problem-posing ability and the complexity of the problems posed. It was also found that the content of the task influenced the differences between the three groups of students as regards the ability in problem posing and the complexity of the problems posed; while in the first (informal context), second and fourth task differences were found between the groups, in the third task (formal context), no differences were evident. The results are interpreted in consideration to the relevant literature findings. Some educational implications are discussed and directions for future research are drawn.     

知识获取、路径依赖对企业创新能力的影响研究

构建知识获取、路径依赖、渐进式创新和突破式创新之间的关系模型,运用SPSS和LISREL软件对收集的248份有效问卷进行实证分析。研究结果表明,中国企业的创新路径为知识获取-渐进式创新-突破式创新,知识获取对渐进式创新具有显著的影响,而对突破式创新的直接影响不显著;同时路径依赖对知识获取与企业渐进式创新之间的关系具有显著的调节作用。这为我国企业通过获取外部信息培育和发展创新能力提供了新的证据和启示。     

哲学视阈中的企业技术创新

企业技术创新是企业持续增强自身竞争力的关键因素,从哲学高度审视企业技术创新,有利于拓展企业技术创新思路.哲学视阈中的企业技术创新包括三层含义:企业技术创新是技术路径依赖与技术路径创造相统一的过程;企业技术创新是技术社会化与社会技术化相统一的过程;企业技术创新过程是技术创新认知与技术创新实践相统一的过程.